(03-16) 08:12 PDT CASTRO VALLEY -- An arrest warrant has been issued for the husband of a woman found shot to death in her Castro Valley home, authorities said.

Feng Mi, who turned 45 Saturday, is being sought in connection with the killing of his wife, 45-year-old Yunyi Zhang, said Alameda County sheriff's Deputy April Luckett. His whereabouts were not immediately known.

Earlier Saturday, Luckett had described Mi has a "person of interest." But authorities later obtained a warrant for Mi's arrest.

"All the information that we found, all the evidence at the house, does point to him and it being suspicious," Luckett said.

Authorities said there had been a history of domestic violence involving the couple.

Zhang's 14-year-old daughter came home from school and found the body at their home on the 19000 block of Stanton Avenue at about 4 p.m. Friday, Luckett said. The daughter wasn't home when the victim was shot, apparently earlier in the day, authorities said. The girl did not realize at first that the body was that of her mother, authorities said.

Mi should be considered armed and dangerous, Luckett said. He may be driving the family's 2013 silver Toyota Rav4 with paper plates possibly from the Dublin Toyota dealership.

The 14-year-old girl and her 8-year-old sister are in protective custody, authorities said.